Well as long as the problem is manageable Responding to your point, but not "lecturing", since I've seen previous analysis by you. Survival computation might not seem all that difficult, but people have worked on it. 1AC=5HP Yoda from TSW made a run at AC vs. HP effects on survivability. I gave up on following the discussion on day 2. An equally gifted mathematician/statistician worked with him each reviewing the other's work. While I'm sure they got a lot of traction on some facets of the problem, iIrc they got hung up on determining a mob's Attack. They both work on it on and off for months before discussion and informal progress reports ceased. So, we're left with quick and dirty heuristic solutions. Gear your character up and see how you like 1AC=4HP and use and Elemental Orb, Then try 1AC=10HP and a Metal Orb.... heal=mitigation isn't any different. Tank some content not using a shield but using an extra heal merc. Watch how a Paladin performs on your weekly raids as the MT. Compare classes MTing in raids, groups, and soloing. Opinion is nice, acquiring a large body of results is nicer - especially when the problem is too massive to solve in the formal scientific way. Semantics - words, just words.